I'm sure I'm just searching for the wrong terms - so if anyone has a better idea of what I should be looking for, please point me in the right direction.
I'm looking to move my users over to using the secure connection to Zimbra. I've purchased and installed an SSL cert from GoDaddy, and when I log in to the Admin site, it appears like it is working correctly. If in any email client, I tell it to use the secure connection though, I get a message like this:
Connection failed. Please verify your server and port settings.
I get this whether I am on the LAN with the server, or connecting from the internet. The system has no software firewall, and all of the ports listed in the wiki are forwarded to the server. I had someone try a dictionary attack on my server today, so making sure everything is secure is now a little higher on my list of things to do